de.lmu.ifi.dbs.elki.distance.distancefunction.colorhistogram

Class RGBHistogramQuadraticDistanceFunction

java.lang.Object

de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractPrimitiveDistanceFunction<NumberVector>

de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractNumberVectorDistanceFunction

de.lmu.ifi.dbs.elki.distance.distancefunction.MatrixWeightedDistanceFunction

de.lmu.ifi.dbs.elki.distance.distancefunction.colorhistogram.RGBHistogramQuadraticDistanceFunction

All Implemented Interfaces:

DistanceFunction<NumberVector>, NumberVectorDistanceFunction<NumberVector>, PrimitiveDistanceFunction<NumberVector>

@Reference(authors="J. Hafner, H. S.Sawhney, W. Equits, M. Flickner, W. Niblack",
           title="Efficient Color Histogram Indexing for Quadratic Form Distance Functions",
           booktitle="IEEE Trans. on Pattern Analysis and Machine Intelligence, Vol. 17, No. 7, July 1995",
           url="http://dx.doi.org/10.1109/34.391417")
public class RGBHistogramQuadraticDistanceFunction
extends MatrixWeightedDistanceFunction

Distance function for RGB color histograms based on a quadratic form and color similarity. This is (unverified) attributed to

James Hafner, Harpreet S.Sawhney, Will Equits, Myron Flickner and Wayne Niblack
Efficient Color Histogram Indexing for Quadratic Form Distance Functions
IEEE Trans. on Pattern Analysis and Machine Intelligence, Vol. 17, No. 7, July 1995

Since:

0.3

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RGBHistogramQuadraticDistanceFunction.Parameterizer Parameterization class.

Field Summary

Fields

Modifier and Type	Field and Description
static OptionID	BPP_ID Parameter for the kernel dimensionality.

Fields inherited from class de.lmu.ifi.dbs.elki.distance.distancefunction.MatrixWeightedDistanceFunction

weightMatrix

Constructor Summary

Constructors

Constructor and Description
RGBHistogramQuadraticDistanceFunction(int bpp) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
static Matrix	computeWeightMatrix(int bpp) Compute weight matrix for a RGB color histogram
boolean	equals(Object obj)

Methods inherited from class de.lmu.ifi.dbs.elki.distance.distancefunction.MatrixWeightedDistanceFunction

distance, getInputTypeRestriction

Methods inherited from class de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractNumberVectorDistanceFunction

dimensionality, dimensionality, dimensionality, dimensionality

Methods inherited from class de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractPrimitiveDistanceFunction

instantiate, isMetric, isSymmetric

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface de.lmu.ifi.dbs.elki.distance.distancefunction.DistanceFunction

instantiate, isMetric, isSymmetric

Field Detail

BPP_ID

public static final OptionID BPP_ID

Parameter for the kernel dimensionality.

Constructor Detail

RGBHistogramQuadraticDistanceFunction

public RGBHistogramQuadraticDistanceFunction(int bpp)

Constructor.

Parameters:

bpp - bins per plane.

Method Detail

computeWeightMatrix

public static Matrix computeWeightMatrix(int bpp)

Compute weight matrix for a RGB color histogram

Parameters:

bpp - bins per plane

Returns:

Weight matrix

equals

public boolean equals(Object obj)

Overrides:

equals in class Object